Can the belt and gauntlet be assigned to the same character?
Can the belt and gauntlet be assigned to separate characters on the same team?

Neither

Page 20 of the 2012 rulebook:

Resources are HeroClix dials that represent different and unique items from the character’s universe. You may include one resource on your force if you pay any associated costs for including them in your force.

That's what I figured. Thanks.

Could you imagine the threads......

OMG! The Gauntlet AND the Belt on Ventry!

The Gauntlet on Galactus, and the Belt on Dormamu!

Both on the Bug!

OMG!!!!1!111!!

if this was possible (which as already stated its not) Cable/Deadpool would be a prime choice. 300 points exactly and they cna destroy the 3,000 point Thanos.